mybatis里使用枚举Enum判断不同条件

public enum PlatformEnum

{
    WX("WX", "微信"),
    TB("TB", "淘宝"),
    ;

    private String platform;
    private String showDesc;

<if test="null != param.platformEnum">
    AND platform = #{param.platformEnum}
   <if test="param.platformEnum == @com.selicoco.sango.thrift.enums.PlatformEnum@TB"> 
    AND rule_type = 1  
   if>
if>